Hadoop发行版本：Apache、CDH、HDP、云服务

大数据平台比较-Apache、CDH、HDP、CDP

hbase报错：java.lang.NoClassDefFoundError: org/apache/htrace/SamplerBuilder

kafka教程-Spring for Apache Kafka版本的选择

aggregateByKey算子报错 org.apache.spark.SparkException: Task not serializable

javabean属性copy（Spring BeanUtils、Cglib BeanCopier、Apache BeanUtils和PropertyUtils）

开源许可证GPL、BSD、MIT、Mozilla、Apache和LGPL的区别

常见的开源协议

hbase-2.1.x 错误 Could not initialize class org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper

org.apache.hadoop.security.AccessControlException: Permission denied: user=dev, access=EXECUTE, inode="/tmp":root:supergroup:drwx